This is my custom insert for the game Wingspan. I'm always welcome to constructive criticism, or suggestions for improvement. Feel free to comment!
This insert does away with the GameTrayz insert that came with the game. I tried to design around it, but it was making it difficult to do anything other than just make boxes. I wasn't really blown away by it on the table either, so it had to go! As my wife put it...designer's choice :). I did keep the dice tower in the box...it's not a great tower, but I kind of like it.
As with all of my designs so far, I've designed it so the insert is flush with the lid with all components in place. It passed the shake test with flying colours, so it will allow for storage on its side. The boxes do shift around a little bit due to the dice tower, but it did not impact anything in the box.
I based the start player marker in my set off of the excellent design at https://www.thingiverse.com/thing:3442331 (designed by Kandyhouse). I highly recommend the owl, it turned out fantastic. I have also replaced the player bits with https://www.thingiverse.com/thing:3557101, and the resources with https://www.thingiverse.com/thing:3557135 (both designed by GregNetDesign). These are fantastic designs, I cannot recommend them enough.
For printing, follow along with the screenshot I have posted in the pictures. It will tell you how many of each STL to print, along with approx cost and time.